[Mathematics in Senior One] After 10 years of research, Brazilian doctor Ma Yan 'en came to the conclusion that people involved in corruption are prone to cancer and cardiovascular diseases. Will be convicted of corruption, The total number of deaths was 444. Then the total number of healthy people is: 580+600-444=736.

Then the number of healthy people taking bribes is (736-272)/2=232.

Then the number of healthy people is: 232+272=504.

So the healthy bribery ratio is: 232: 580 = 2: 5, which is 40%.

The ratio of cleanliness and hygiene is 504: 600 = 84: 100, which is 84%.